Hi Ivan,
On Fri, Jun 22, 2018 at 12:13 PM, Bin Meng bmeng.cn@gmail.com wrote:
Hi Ivan,
On Fri, Jun 22, 2018 at 12:16 PM, Bin Meng bmeng.cn@gmail.com wrote:
From: Ivan Gorinov ivan.gorinov@intel.com
Built without a ROM image with FSP (u-boot.rom), the U-Boot loader applies the microcode update data block encoded in Device Tree to the bootstrap processor but not passed to the other CPUs when multiprocessing is enabled.
If the bootstrap processor successfully performs a microcode update from Device Tree, use the same data block for the other processors.
Signed-off-by: Ivan Gorinov ivan.gorinov@intel.com Reviewed-by: Bin Meng bmeng.cn@gmail.com [bmeng: fixed build errors on edison and qemu-x86] Signed-off-by: Bin Meng bmeng.cn@gmail.com
Changes in v3:
- don't change arch/x86/cpu/i386/cpu.c to fix build errors on edison and qemu-x86
I don't think the update to arch/x86/cpu/i386/cpu.c in previous version is needed as mp_params.microcode_pointer is not needed during the MP boot. Please test this patch to see if it works on your board.
arch/x86/cpu/intel_common/car.S | 2 ++ arch/x86/cpu/intel_common/microcode.c | 10 +++++++--- arch/x86/include/asm/microcode.h | 1 + arch/x86/lib/fsp/fsp_car.S | 4 +++- 4 files changed, 13 insertions(+), 4 deletions(-)
Did you get a chance to test this? If no issue, I will take this patch for v2018.07.
Regards, Bin